this thread was done so well and long ago with so many hits and still aint a sticky? wtf ive been around for a lil bit so luckily had seen it and could find it when i needed it.....(today), but newbies should be able to find this right away!

great writup zee. im working my way through my a.d.d. to get down the list but i think i need not go much farther then #1 so far!

COME ON MODS

STICKY!!!

Thanks for the kudos. This thread was added to the FAQ a month or so ago. It's ironic that I need to run the list myself, I've been having misfires. I guess I need to practice what I preach.

One other little tidbit that I may have failed to mention...and hope it helps someone else down the road..

I think I had bosch o2 sensors in mine before I swapped them the 2nd time. Not saying for sure that they were bad or shorted...because I simply replaced them without testing the sensors themselves. It would be ironic if shorted o2 sensors contributed to early PCM failure....but now I'll never know. Over 200 miles with the new pcm and not a single hiccup.
( and yes....my connector tabs are all broken off too...because some dumbazz
<<<<<<<<<<<<<<< did it.)

One other little tidbit that I may have failed to mention...and hope it helps someone else down the road..

I think I had bosch o2 sensors in mine before I swapped them the 2nd time. Not saying for sure that they were bad or sorted...because I simply replaced them without testing the sensors themselves. It would be ironic if shorted o2 sensors contributed to early PCM failure....but now I'll never know. Over 200 miles with the new pcm and not a single hiccup.
( and yes....my connector tabs are all broken off too...because some dumbazz
<<<<<<<<<<<<<<< did it.)

my O2 harness melted to my exhaust.....think it may have killed my pcm! Still diagnosing though.

If so where would you recomend getting a new pcm from? And what should I expect to give for one? I looked a lil but prices are all over the place.

None of the wires themselves melted together, but the harness itself was squarely resting on the exhaust. Melted it enough that I had to break it apart. One wire was melted all the way through and exposed bare wire....wich WAS in contact with the exhaust.

Don't forget to mention that you get no CEL when you turn the key to on position, and your code reader won't connect to the PCM. Your PCM number is 05010384AB. On a side note, if he has to get another PCM for his Jeep; will he have to have it programmed by the dealer with his VIN?

__________________
***If you try to fail and succeed, then which have you done?

My code reader would connect to the bad pcm....and like zeejay said, the 97 needs no additional programming prior to installation....not even mileage nor VIN.
When the downstream o2 sensor wires short, ( a common issue) they will most likely blow a 15 amp fuse in the PDC. Dont know what happens if the sensor develops a high resistance internal short.